when you get the card, start up your comp using the old card. Go to ctrl panel/system/device manager. Expand the 'display adapters' menu, right click your current video card and say 'uninstall'. After uninstall it will ask you to restart. Instead of restarting, shut off the computer, remove the old card, insert the new card and restart the computer. When in windows, put the CD in that comes with the video card and install the drivers. After thats all done and working, go to the nVidia/ATI website and DL the most recent drivers.